A light converting device comprising: a light converter with a light entrance surface and a light emission surface, wherein the light converter is arranged to convert laser light scanned over the light entrance surface to converted light, wherein a peak emission wavelength of the converted light is in a longer wavelength range than a laser peak emission wavelength of the laser light, a confinement structure enclosing the light converter, wherein the confinement structure is arranged to preserve a geometric shape of the light converter in case of a mechanical failure of the light converter. A laser-based light source comprising such a light converting device and a vehicle headlight comprising such a laser-based light source.

A light converting device comprising: a light converter with a light entrance surface and a light emission surface, wherein the light converter is arranged to convert laser light scanned over the light entrance surface to converted light, wherein a peak emission wavelength of the converted light is in a longer wavelength range than a laser peak emission wavelength of the laser light, a confinement structure enclosing the light converter, wherein the confinement structure is arranged to preserve a geometric shape of the light converter in case of a mechanical failure of the light converter. A laser-based light source comprising such a light converting device and a vehicle headlight comprising such a laser-based light source.

An LED tube lamp and an impedance detection method thereof are provided. The LED tube lamp includes a power supply module comprising an impedance detection controller, configured to perform, before the LED tube lamp being lighted up, an impedance detection to determine whether the LED tube lamp is electrically connected to a foreign external impedance in series. When the LED tube lamp is connected to the foreign external impedance in series, the impedance detection controller causes at least two transient variations to an operating current of the LED tube lamp and limits the operating current of the LED tube lamp to not exceed 5 MIU in root-mean-square (RMS), in which a duration of each transient variation does not exceed 1 millisecond when the impedance detection controller performs the impedance detection.

An LED tube lamp and an impedance detection method thereof are provided. The LED tube lamp includes a power supply module comprising an impedance detection controller, configured to perform, before the LED tube lamp being lighted up, an impedance detection to determine whether the LED tube lamp is electrically connected to a foreign external impedance in series. When the LED tube lamp is connected to the foreign external impedance in series, the impedance detection controller causes at least two transient variations to an operating current of the LED tube lamp and limits the operating current of the LED tube lamp to not exceed 5 MIU in root-mean-square (RMS), in which a duration of each transient variation does not exceed 1 millisecond when the impedance detection controller performs the impedance detection.

An example Smart Candle Platform is configured to includes a candle fixture that comprises an outer shell having an opening, a mid-frame, and a base, and a fuel bottle configured to hold a fuel material and is removably coupled to the candle fixture. The fuel bottle is positioned at least partially within a hollow interior of the mid-frame of the candle fixture and accommodated by the base. The fuel bottle further comprises a wick that extends through an opening of the outer shell, and the candle fixture includes an ignitor configured to ignite the fuel material via the wick to produce a living flame, a proximity sensor to sense a distance between an object and the living flame, a self-extinguisher, and a control system configured to, upon determining the distance between the object and the living flame is unsafe, control the self-extinguisher to extinguish the living flame.

An anti-shock night light comprises pins, a night light main body, an anti-shock device, and an elastic resetting member. A first end of the anti-shock device is movably connected to an opening to enable the anti-shock device to move in a length direction of the pins, and a second end of the anti-shock device extends away from the night light main body along the length direction so as to enable a part of the pins, which is exposed out of the night light main body, to be contained within the anti-shock device. When plugging the pins into a socket, the anti-shock device abuts the socket and is retracted toward the night light main body to enable the part of the pins to be exposed and plugged into the socket. When the anti-shock device is retracted toward the night light main body, the elastic resetting member generates an elastic resetting force.

An anti-shock night light comprises pins, a night light main body, an anti-shock device, and an elastic resetting member. A first end of the anti-shock device is movably connected to an opening to enable the anti-shock device to move in a length direction of the pins, and a second end of the anti-shock device extends away from the night light main body along the length direction so as to enable a part of the pins, which is exposed out of the night light main body, to be contained within the anti-shock device. When plugging the pins into a socket, the anti-shock device abuts the socket and is retracted toward the night light main body to enable the part of the pins to be exposed and plugged into the socket. When the anti-shock device is retracted toward the night light main body, the elastic resetting member generates an elastic resetting force.

An LED tube lamp and an impedance detection method thereof are provided. The LED tube lamp includes a power supply module comprising an impedance detection controller, configured to perform, before the LED tube lamp being lighted up, an impedance detection to determine whether the LED tube lamp is electrically connected to a foreign external impedance in series. When the LED tube lamp is connected to the foreign external impedance in series, the impedance detection controller causes at least two transient variations to an operating current of the LED tube lamp and limits the operating current of the LED tube lamp to not exceed 5 MIU in root-mean-square (RMS), in which a duration of each transient variation does not exceed 1 millisecond when the impedance detection controller performs the impedance detection.

An LED tube lamp and an impedance detection method thereof are provided. The LED tube lamp includes a power supply module comprising an impedance detection controller, configured to perform, before the LED tube lamp being lighted up, an impedance detection to determine whether the LED tube lamp is electrically connected to a foreign external impedance in series. When the LED tube lamp is connected to the foreign external impedance in series, the impedance detection controller causes at least two transient variations to an operating current of the LED tube lamp and limits the operating current of the LED tube lamp to not exceed 5 MIU in root-mean-square (RMS), in which a duration of each transient variation does not exceed 1 millisecond when the impedance detection controller performs the impedance detection.

In an embodiment, a lighting apparatus includes a cup housing, a light source module, a protective cover and a light passing cover. The cup housing includes a platform and a first surrounding wall. The light source module has multiple LED modules mounted on the platform surrounded by the first surrounding wall. The platform may be a flat plate or a curve surface. Holes, protrusion or other structures may also appear on the platform. In some embodiments, the platform provides positioning structures for aligning and installing the light source module.